Becoming the ruler of Đại Việt at the age of twelve, Lý Thần Tông successfully maintained the order of the royal court and strengthened the stability of the country with the assistance of capable officials.
[4][5] At that time, the Đại Việt's borders were fairly stable except for some skirmishes with the Khmer ruler Suryavarman II, starting in 1128,[6]: 75–76 and Champa, which were driven out by the Lý army without difficulty.
[10] Lê Văn Hưu, together with Ngô Sĩ Liên, again criticized Lý Thần Tông for his order in the first month of 1130 that every daughter of the mandarins in the royal court had to be available for the emperor's selection of concubines and ones who were not chosen could only get married afterwards.
[11] Because of the young age of the emperor, Ngô Sĩ Liên and Lê Văn Hưu often pointed their criticisms to Lý Thần Tông's officials who were considered ( by the historians ) lacking ability and being flatterers.
[4] On the other hand, the modern historian Trần Trọng Kim wrote in his Việt Nam sử lược that Đại Việt was able to witness a peaceful era during the reign of Lý Thần Tông thanks to some capable mandarins such as Trương Bá Ngọc, Lưu Khánh Đàm and Dương Anh Nhị and the policy of "ngụ binh ư nông" which meant conscripting farmers into the army for a period of six months and release them for the remaining six months so that they could resume their farming work and thus the agriculture of the country was not affected by military activities.
[15] In the ninth month of 1138, the ill emperor decided to make Lý Thiên Tộ his successor and downgraded Lý Thiên Lộc to Prince Minh Đạo (Minh Đạo vương) after a campaign opened by three other concubines of the Emperor, Ladies Cảm Thánh, Nhật Phụng and Phụng Thánh, who were afraid that the coronation of a concubine's son would menace their position in royal family.